
Review Summary
The RCF ND950 1.4 is a ultra compact size, high performance, high power handling 4.0-inch diaphragm compression driver with a 1.4 inch exit throat. The high power neodymium magnet assure the perfect control of the dome assembly's moving mass. This leads to higher efficiency, better transient response and diminishes high frequency distortion modes. A thin copper ring is precision pressed on to the pole piece in order to modify and lower the inductance characteristics of the magnetic circuit and voice coil providing a controlled extension of the acoustic frequency response.
The ND950 1.4 features a 0.05 mm thick pure titanium dome in combination with a high strength Mylar suspension. The voice coil assembly is designed using a high strength, high temperature Kapton voice coil former and edge wound copper clad aluminum wire. The ND950 1.4 features a 4-slot, optimized geometry, phase plug design. Extended computer assisted mathematical modeling and testing has resulted in a geometry that provides a balanced acoustic performance controlling and lowering air distortion and maximizing output. With a wide frequency response range (500 Hz - 20.000 Hz) and 280 Watt power handling, the ND950 1.4 is the ideal driver for heavy duty professional applications.